CN219503907U - Soaking plate welding fixture - Google Patents
Soaking plate welding fixture Download PDFInfo
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- CN219503907U CN219503907U CN202320479652.2U CN202320479652U CN219503907U CN 219503907 U CN219503907 U CN 219503907U CN 202320479652 U CN202320479652 U CN 202320479652U CN 219503907 U CN219503907 U CN 219503907U
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- pressing plate
- graphite
- plate
- upper pressing
- welding fixture
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The utility model discloses a soaking plate welding fixture, and belongs to the technical field of brazing assembly fixtures. The welding device comprises a plurality of graphite plates, wherein an interlayer for placing workpieces to be welded is formed between the graphite plates; the graphite plate is arranged between the upper pressing plate and the lower pressing plate; a plurality of locking holes are formed in the upper pressing plate and the lower pressing plate, and the upper pressing plate and the lower pressing plate are locked through locking pieces penetrating through the locking holes; the width of the graphite plate is smaller than the widths of the upper pressing plate and the lower pressing plate, and the length of the graphite plate is larger than the lengths of the upper pressing plate and the lower pressing plate; the graphite plate is fixed between the upper pressing plate and the lower pressing plate through the limiting assembly by the welding fixture; the welding fixture is under the combined action of the pressure generated by the dead weight of the upper pressing plate and the locking force generated by the locking piece, so that certain pressure is maintained all the time in the brazing process, and the welding quality reliability of the workpiece is ensured; the deformation is small in a high-temperature environment, so that the workpiece can be ensured to keep flatness; the arrangement of the clearance groove enables the workpiece to be smoother and better in laminating degree in the welding process.
Description
Technical Field
The utility model relates to the technical field of brazing assembly fixtures, in particular to a soaking plate welding fixture.
Background
With the promotion of 5G and the diversification and high performance of mobile phone performances, the power consumption of mobile phone chips is higher and higher, and the requirements on rapid heat conduction and heat dissipation are strong. Therefore, the smart phone of the present stage gradually introduces an ultrathin Vapor Chamber (VC) into the heat dissipation design of the mobile phone except for using heat conducting graphite, heat conducting silicone grease, heat conducting silicon chips, microcapsule phase change materials, high-conductivity alloy midframe and ultrathin heat pipes. The ultrathin Vapor Chamber (VC) is a novel thin-wall heat dissipation product designed for adapting to integration, light weight and high performance of a smart phone on the principle and similar structures of heat pipes. The thickness of the ultrathin VC is currently 0.3mm lower, and the thickness of a mature applied product is temporarily 0.4mm after the process improvement and material upgrading in the industry. At present, the ultra-thin Vapor Chamber (VC) industry generally adopts an etching process, a vacuum cavity is etched on two special copper alloys with the thickness of only 0.2mm, then a capillary copper net is fixed in the cavity by adopting a resistance welding process, then copper sheets are welded into a whole by a brazing process, and the manufacturing of the ultra-thin vapor chamber is completed through the procedures of vacuumizing, liquid injection, secondary degassing, head spot welding and the like. Wherein the brazing process is to assemble the surface-cleaned workpieces together in a lap joint manner and place the brazing filler metal near or between the joint gaps. When the workpiece and the brazing filler metal are heated to a temperature slightly higher than the melting point of the brazing filler metal, the brazing filler metal is melted (the workpiece is not melted), sucked and filled between the gaps of the solid workpiece by capillary action, the liquid brazing filler metal and the workpiece metal are mutually diffused and dissolved, and the brazing joint is formed after condensation. The requirement on the compaction and lamination of the workpiece is extremely high during brazing, the upper plate and the lower plate are required to be fully contacted and laminated, otherwise, the partial cold joint defect is easy to occur; the requirement for workpiece flatness is extremely high, typically above 0.8. Therefore, the product is clamped by a clamp during brazing, a certain pressure is maintained on a brazing surface, and a product with good welding quality, good product shape and size can be obtained after welding.
The utility model with the application number of CN202220094083.5 discloses a fixture device for a brazing assembly, which comprises a clamping piece, wherein the clamping piece comprises at least two graphite plates which are arranged in a layered mode, an interlayer used for clamping a test piece is arranged between the graphite plates which are arranged in the layered mode, a plurality of through holes used for ventilation and heat dissipation are formed in the graphite plates, the outer side faces of the graphite plates are in an exposed state, and the fixture device further comprises a locking piece used for locking the graphite plates through pressure, and the locking piece is made of a high-temperature alloy material.
However, the above prior art still has certain drawbacks, such as insufficient locking force by the locking member and uneven distribution of the locking force when a large clamping force is required, and the flatness of the workpiece is easily affected; in addition, the prior art does not have a designed clearance structure, and when a boss on a workpiece to be welded needs to be cleared, the use requirement cannot be met.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide a soaking plate welding fixture, which always maintains certain pressure in the brazing process to ensure the welding quality reliability of workpieces; the deformation is small in a high-temperature environment, so that the workpiece can be ensured to keep flatness; the arrangement of the clearance groove enables the workpiece to be smoother and better in laminating degree in the welding process.
The technical scheme adopted for solving the technical problems is as follows: the welding fixture comprises a plurality of graphite plates, and interlayers for placing workpieces to be welded are formed among the graphite plates; the welding fixture further comprises an upper pressing plate and a lower pressing plate, and the plurality of graphite plates are arranged between the upper pressing plate and the lower pressing plate; a plurality of locking holes are formed in the upper pressing plate and the lower pressing plate, and the upper pressing plate and the lower pressing plate are locked through locking pieces penetrating through the locking holes; the width of the graphite plate is smaller than the widths of the upper pressing plate and the lower pressing plate, and the length of the graphite plate is larger than the lengths of the upper pressing plate and the lower pressing plate; the graphite plate is fixed between the upper pressing plate and the lower pressing plate through the limiting assembly by the welding fixture; the welding fixture is used for always maintaining certain pressure in the brazing process under the combined action of the pressure generated by the dead weight of the upper pressing plate and the locking force generated by the locking piece.
Further, the limiting assembly comprises limiting grooves formed in the left side and the right side of the upper pressing plate, limiting holes formed in the left end and the right end of the graphite plate, and limiting columns penetrating through the limiting holes.
Furthermore, the height of the limiting post exceeds the sum of the heights of the graphite plates, the lower end of the limiting post reaches the limiting hole of the lowest graphite plate, and the upper end of the limiting post extends out of the limiting hole of the uppermost graphite plate and is embedded in the limiting groove.
Further, a plurality of empty-avoiding grooves are formed in the upper side and the lower side of the graphite plate; the depth of the empty-avoiding groove is 25-40 mm; the width of the empty avoiding groove is 3.0-5.0 mm.
Further, the number of layers of the graphite plate is 2-8; the thickness of the graphite plate is 3-8 mm.
Further, the locking piece comprises a locking bolt and a locking nut, wherein the locking bolt penetrates through locking holes in the upper pressing plate and the lower pressing plate and is locked through the locking nut.
Further, the upper pressing plate and the lower pressing plate are both made of 304 stainless steel, the thickness is more than 10mm, and the dead weight of the upper pressing plate is 3-5 kg; the locking piece is made of nickel alloy and can resist 950 ℃ high temperature.
The beneficial effects of the utility model are as follows: compared with the prior art, the soaking plate welding fixture provided by the utility model has the following advantages:
1) The brazing clamp always maintains a certain pressure in the brazing process through the pressure generated by the dead weight and the pressure generated by the locking force, so that the welding quality reliability of workpieces is ensured; and the pressure can be adjusted by adjusting the locking piece;
2) The fixture adopts a graphite plate, a high-temperature resistant stainless steel upper pressing plate and a high-temperature resistant stainless steel lower pressing plate, and the locking piece is made of nickel alloy, so that the whole brazing fixture can adapt to a high-temperature environment of 700 ℃, deformation is small in the high-temperature environment, and the workpiece is ensured to keep flatness; the heat transfer efficiency of the brazing device is improved, and the material consumption, the energy consumption and the emission in the brazing process are reduced;
3) The brazing clamp bolt and the nut are convenient to replace, and all adopt industry standard components; the brazing clamp adopts a multi-layer graphite plate design, so that the overall height of the fixture is reduced, and the number of the workpieces to be brazed at one time is increased;
4) The limiting component is convenient for fixing the graphite plate between the upper pressing plate and the lower pressing plate, so that the stability of welding is enhanced; the clearance groove is used for clearance of the boss on the workpiece, so that the integrity and high quality of workpiece forming are facilitated.
Drawings
Fig. 1 is a schematic perspective view of a welding fixture according to the present utility model.
Fig. 2 is a schematic diagram of a front structure of a welding fixture according to the present utility model.
Fig. 3 is a schematic side view of a welding fixture according to the present utility model.
Fig. 4 is a schematic side view of a welding fixture according to the present utility model.
Fig. 5 is a schematic structural view of a graphite plate in the welding fixture provided by the utility model.
Fig. 6 is a schematic structural view of an upper platen in the welding fixture provided by the utility model.
Fig. 7 is a schematic structural view of a lower platen in the welding fixture provided by the utility model.
Wherein, 1-upper pressing plate; 2-locking holes; 3-a limit groove; 4-limiting columns; 5-graphite plates; 6-locking a bolt; 7-a lower pressing plate; 8-an empty-avoiding groove; 9-a workpiece; 10-a boss; 11-locking nut; 12-limit holes.
Description of the embodiments
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
As shown in fig. 1-7, a welding fixture for a soaking plate comprises a plurality of graphite plates 5, wherein an interlayer for placing a workpiece 9 to be welded is formed between each graphite plate 5; the welding fixture further comprises an upper pressing plate 1 and a lower pressing plate 7, and the plurality of graphite plates 5 are arranged between the upper pressing plate 1 and the lower pressing plate 7; a plurality of locking holes 2 are formed in the upper pressing plate 1 and the lower pressing plate 7, and the upper pressing plate 1 and the lower pressing plate 7 are locked through locking pieces penetrating through the locking holes 2; the width of the graphite plate 5 is smaller than the widths of the upper pressing plate 1 and the lower pressing plate 7, and the length of the graphite plate 5 is larger than the lengths of the upper pressing plate 1 and the lower pressing plate 7; the graphite plate 5 is fixed between the upper pressing plate 1 and the lower pressing plate 7 through a limiting assembly by the welding fixture; the welding fixture is used for maintaining certain pressure all the time in the brazing process under the combined action of the pressure generated by the dead weight of the upper pressing plate 1 and the locking force generated by the locking piece.
In one embodiment, the limiting assembly comprises limiting grooves 3 arranged on the left side and the right side of the upper pressing plate 1, limiting holes 12 arranged on the left end and the right end of each graphite plate 5, and limiting columns 4 penetrating through the limiting holes 12. The height of the limiting column 4 exceeds the sum of the heights of the graphite plates 5, the lower end of the limiting column 4 reaches into the limiting hole 12 of the lowest graphite plate 5, and the upper end of the limiting column 4 extends out of the limiting hole 12 of the highest graphite plate 5 and is embedded into the limiting groove 3.
In one embodiment, a plurality of empty-avoiding grooves 8 are arranged on the upper side and the lower side of the graphite plate 5; the depth of the empty-avoiding groove 8 is 25-40 mm, and in this embodiment, the depth of the empty-avoiding groove 8 is preferably 30mm; the width of the void-avoidance groove 8 is 3.0-5.0 mm, and in this embodiment, the width of the void-avoidance groove 8 is preferably 4mm.
In one embodiment, the number of layers of the graphite plate 5 is 2-8, and in this embodiment, the number of layers of the graphite plate 5 is preferably 5; the thickness of the graphite sheet 5 is 3 to 8mm, and in this embodiment, the thickness of the graphite sheet 5 is preferably 5mm.
In one embodiment, the locking member comprises a locking bolt 6 and a locking nut 11, wherein the locking bolt 6 is arranged in the locking holes 2 on the upper pressing plate 1 and the lower pressing plate 7 in a penetrating way, and is locked by the locking nut 11.
In one embodiment, the upper pressing plate 1 and the lower pressing plate 7 are made of 304 stainless steel, the thickness is more than 10mm, and the dead weight of the upper pressing plate 1 is 3-5 kg; the locking piece is made of nickel alloy and can resist 950 ℃ high temperature.
The welding fixture works in such a way that the graphite plates 5 are clamped up and down through the upper and lower pressing plates 7, and each layer of graphite plate 5 is fixed between the upper pressing plate 1 and the lower pressing plate 7 through a limiting assembly; the upper pressing plate 1 can generate downward pressure with self weight of about 4 kg; in addition, the locking bolts 6 on two sides are locked with the locking nuts 11, and the locking force can be adjusted through a torque wrench; transmitting a certain pressure to a workpiece 9 to be welded through the graphite plate 5, so that the workpiece 9 is pressed and attached; melting the brazing filler metal at high temperature (the workpieces 9 are not melted), filling gaps among the workpieces 9, and forming a brazing joint after condensation, so that the sealing effect of the product is achieved; in the clamping process, bosses 10 on the upper bottom plate and the lower bottom plate of the workpiece 9 can be kept away through the empty avoiding grooves 8.
The above embodiments are only for illustrating the present utility model, not for limiting the present utility model, and various changes and modifications may be made by one of ordinary skill in the relevant art without departing from the spirit and scope of the present utility model, and therefore, all equivalent technical solutions are also within the scope of the present utility model, and the scope of the present utility model is defined by the claims.
Claims (7)
1. The welding fixture comprises a plurality of graphite plates, and interlayers for placing workpieces to be welded are formed among the graphite plates; the method is characterized in that: the welding fixture further comprises an upper pressing plate and a lower pressing plate, and the plurality of graphite plates are arranged between the upper pressing plate and the lower pressing plate; a plurality of locking holes are formed in the upper pressing plate and the lower pressing plate, and the upper pressing plate and the lower pressing plate are locked through locking pieces penetrating through the locking holes; the width of the graphite plate is smaller than the widths of the upper pressing plate and the lower pressing plate, and the length of the graphite plate is larger than the lengths of the upper pressing plate and the lower pressing plate; the graphite plate is fixed between the upper pressing plate and the lower pressing plate through the limiting assembly by the welding fixture; the welding fixture is used for always maintaining certain pressure in the brazing process under the combined action of the pressure generated by the dead weight of the upper pressing plate and the locking force generated by the locking piece.
2. The vapor chamber welding fixture of claim 1, wherein: the limiting assembly comprises limiting grooves formed in the left side and the right side of the upper pressing plate, limiting holes formed in the left end and the right end of the graphite plate, and limiting columns penetrating through the limiting holes.
3. The vapor chamber welding fixture of claim 2, wherein: the height of the limiting column exceeds the sum of the heights of the graphite plates, the lower end of the limiting column reaches the limiting hole of the lowest graphite plate, and the upper end of the limiting column extends out of the limiting hole of the uppermost graphite plate and is embedded in the limiting groove.
4. The vapor chamber welding fixture of claim 1, wherein: a plurality of empty-avoiding grooves are formed in the upper side and the lower side of the graphite plate; the depth of the empty-avoiding groove is 25-40 mm; the width of the empty avoiding groove is 3.0-5.0 mm.
5. The vapor chamber welding fixture of claim 1, wherein: the number of layers of the graphite plate is 2-8; the thickness of the graphite plate is 3-8 mm.
6. The vapor chamber welding fixture of claim 1, wherein: the locking piece comprises a locking bolt and a locking nut, wherein the locking bolt penetrates through locking holes in the upper pressing plate and the lower pressing plate and is locked through the locking nut.
7. The vapor chamber welding fixture of claim 1, wherein: the upper pressing plate and the lower pressing plate are both made of 304 stainless steel, the thickness is greater than 10mm, and the dead weight of the upper pressing plate is 3-5 kg; the locking piece is made of nickel alloy and can resist 950 ℃ high temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320479652.2U CN219503907U (en) | 2023-03-14 | 2023-03-14 | Soaking plate welding fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320479652.2U CN219503907U (en) | 2023-03-14 | 2023-03-14 | Soaking plate welding fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219503907U true CN219503907U (en) | 2023-08-11 |
Family
ID=87548731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320479652.2U Active CN219503907U (en) | 2023-03-14 | 2023-03-14 | Soaking plate welding fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219503907U (en) |
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2023
- 2023-03-14 CN CN202320479652.2U patent/CN219503907U/en active Active
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